The common reasons why legs tend to become numb include: lumbar disc herniation, leg nerve undernutrition, and cerebrovascular disease.
1. Lumbar intervertebral disc herniation: with age, the intervertebral disc and the soft tissue of lumbar vertebral space will be slack, and in the case of improper exertion, the intervertebral disc will be herniated and the nerves innervating the lower limbs will be compressed, which will result in the symptom of numbness of the legs.
2. Inadequate nutrition of leg nerves: Commonly, plaque formation in the arteries of the lower limbs will lead to ischemia and hypoxia of the nerves of the legs, resulting in numbness of the legs, especially after strenuous exercise, the numbness symptom is more obvious.
3. Cerebrovascular disease: for example, severe cerebral arteriosclerosis, cerebral infarction, cerebral hemorrhage, etc., which will lead to damage to the surrounding nerves and cause numbness in the legs.
4. Other: for example, keeping a posture for a long time, which will make the leg muscles and nerves be compressed, resulting in numbness of the legs.
When the phenomenon of numbness of legs occurs, early diagnosis and early treatment should be made.